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どこかのエンジニアモドキの備忘録

Linux で Wacom CTH-490 を使うときの設定

Wacom CTH-490 を買ったのでちょっと設定を弄ってみる。CTH-490 だけど、サイズが違うだけの CTH-690 と共通だと思う。UbuntuKDEWacom タブレットドライバの環境は下記の通り。

$ lsb_release -a
Distributor ID: Ubuntu
Description:    Ubuntu 17.04
Release:    17.04
Codename:   zesty

$ kf5-config --version
Qt: 5.7.1
KDE Frameworks: 5.31.0
kf5-config: 1.0

$ plasmashell --version
plasmashell 5.9.5

$ modinfo wacom
filename:       /lib/modules/4.10.0-37-generic/kernel/drivers/hid/wacom.ko
license:        GPL
description:    USB Wacom tablet driver
author:         Vojtech Pavlik <vojtech@ucw.cz>
version:        v2.00
srcversion:     743E49E67E51AC164090406
alias:          hid:b0018g0101v0000056Ap*
alias:          hid:b0003g0101v0000056Ap*
alias:          hid:b0003g*v000017EFp00006004
alias:          hid:b0003g0101v0000056Ap00005002
alias:          hid:b0003g0101v0000056Ap00005000
alias:          hid:b0003g0101v0000056Ap00004004
alias:          hid:b0003g0101v0000056Ap00004001
alias:          hid:b0003g0101v0000056Ap00000343
alias:          hid:b0003g0101v0000056Ap0000033E
alias:          hid:b0003g0101v0000056Ap0000033D
alias:          hid:b0003g0101v0000056Ap0000033C
alias:          hid:b0003g0101v0000056Ap0000033B
alias:          hid:b0003g0101v0000056Ap00000336
alias:          hid:b0003g0101v0000056Ap00000335
alias:          hid:b0003g0101v0000056Ap00000333
alias:          hid:b0003g0101v0000056Ap00000331
alias:          hid:b0003g0101v0000056Ap0000032F
alias:          hid:b0003g0101v0000056Ap0000032C
alias:          hid:b0003g0101v0000056Ap0000032B
alias:          hid:b0003g0101v0000056Ap0000032A
alias:          hid:b0003g0101v0000056Ap00000326
alias:          hid:b0003g0101v0000056Ap00000325
alias:          hid:b0003g0101v0000056Ap00000323
alias:          hid:b0003g0101v0000056Ap00000319
alias:          hid:b0003g0101v0000056Ap00000318
alias:          hid:b0003g0101v0000056Ap00000317
alias:          hid:b0003g0101v0000056Ap00000315
alias:          hid:b0003g0101v0000056Ap00000314
alias:          hid:b0003g0101v0000056Ap0000030E
alias:          hid:b0003g0101v0000056Ap0000030C
alias:          hid:b0003g0101v0000056Ap0000030A
alias:          hid:b0003g0101v0000056Ap00000309
alias:          hid:b0003g0101v0000056Ap00000307
alias:          hid:b0003g0101v0000056Ap00000304
alias:          hid:b0003g0101v0000056Ap00000303
alias:          hid:b0003g0101v0000056Ap00000302
alias:          hid:b0003g0101v0000056Ap00000301
alias:          hid:b0003g0101v0000056Ap00000300
alias:          hid:b0003g0101v0000056Ap0000012C
alias:          hid:b0003g0101v0000056Ap00000116
alias:          hid:b0003g0101v0000056Ap0000010F
alias:          hid:b0003g0101v0000056Ap0000010E
alias:          hid:b0003g0101v0000056Ap0000010D
alias:          hid:b0003g0101v0000056Ap00000101
alias:          hid:b0003g0101v0000056Ap00000100
alias:          hid:b0003g0101v0000056Ap000000FB
alias:          hid:b0003g0101v0000056Ap000000FA
alias:          hid:b0003g0101v0000056Ap000000F8
alias:          hid:b0003g0101v0000056Ap000000F6
alias:          hid:b0003g0101v0000056Ap000000F4
alias:          hid:b0003g0101v0000056Ap000000F0
alias:          hid:b0003g0101v0000056Ap000000EF
alias:          hid:b0003g0101v0000056Ap000000ED
alias:          hid:b0003g0101v0000056Ap000000EC
alias:          hid:b0003g0101v0000056Ap000000E6
alias:          hid:b0003g0101v0000056Ap000000E5
alias:          hid:b0003g0101v0000056Ap000000E3
alias:          hid:b0003g0101v0000056Ap000000E2
alias:          hid:b0003g0101v0000056Ap000000DF
alias:          hid:b0003g0101v0000056Ap000000DE
alias:          hid:b0003g0101v0000056Ap000000DD
alias:          hid:b0003g0101v0000056Ap000000DB
alias:          hid:b0003g0101v0000056Ap000000DA
alias:          hid:b0003g0101v0000056Ap000000D8
alias:          hid:b0003g0101v0000056Ap000000D7
alias:          hid:b0003g0101v0000056Ap000000D6
alias:          hid:b0003g0101v0000056Ap000000D5
alias:          hid:b0003g0101v0000056Ap000000D4
alias:          hid:b0003g0101v0000056Ap000000D3
alias:          hid:b0003g0101v0000056Ap000000D2
alias:          hid:b0003g0101v0000056Ap000000D1
alias:          hid:b0003g0101v0000056Ap000000D0
alias:          hid:b0003g0101v0000056Ap000000CE
alias:          hid:b0003g0101v0000056Ap000000CC
alias:          hid:b0003g0101v0000056Ap000000C7
alias:          hid:b0003g0101v0000056Ap000000C6
alias:          hid:b0003g0101v0000056Ap000000C5
alias:          hid:b0003g0101v0000056Ap000000C4
alias:          hid:b0003g0101v0000056Ap000000C2
alias:          hid:b0003g0101v0000056Ap000000C0
alias:          hid:b0005g0101v0000056Ap000000BD
alias:          hid:b0003g0101v0000056Ap000000BC
alias:          hid:b0003g0101v0000056Ap000000BB
alias:          hid:b0003g0101v0000056Ap000000BA
alias:          hid:b0003g0101v0000056Ap000000B9
alias:          hid:b0003g0101v0000056Ap000000B8
alias:          hid:b0003g0101v0000056Ap000000B7
alias:          hid:b0003g0101v0000056Ap000000B5
alias:          hid:b0003g0101v0000056Ap000000B4
alias:          hid:b0003g0101v0000056Ap000000B3
alias:          hid:b0003g0101v0000056Ap000000B2
alias:          hid:b0003g0101v0000056Ap000000B1
alias:          hid:b0003g0101v0000056Ap000000B0
alias:          hid:b0003g0101v0000056Ap0000009F
alias:          hid:b0003g0101v0000056Ap0000009A
alias:          hid:b0003g0101v0000056Ap00000097
alias:          hid:b0003g0101v0000056Ap00000093
alias:          hid:b0003g0101v0000056Ap00000090
alias:          hid:b0003g0101v0000056Ap00000084
alias:          hid:b0005g0101v0000056Ap00000081
alias:          hid:b0003g0101v0000056Ap0000006B
alias:          hid:b0003g0101v0000056Ap0000006A
alias:          hid:b0003g0101v0000056Ap00000069
alias:          hid:b0003g0101v0000056Ap00000065
alias:          hid:b0003g0101v0000056Ap00000064
alias:          hid:b0003g0101v0000056Ap00000063
alias:          hid:b0003g0101v0000056Ap00000062
alias:          hid:b0003g0101v0000056Ap00000061
alias:          hid:b0003g0101v0000056Ap00000060
alias:          hid:b0003g0101v0000056Ap0000005E
alias:          hid:b0003g0101v0000056Ap0000005D
alias:          hid:b0003g0101v0000056Ap0000005B
alias:          hid:b0003g0101v0000056Ap00000059
alias:          hid:b0003g0101v0000056Ap00000057
alias:          hid:b0003g0101v0000056Ap00000047
alias:          hid:b0003g0101v0000056Ap00000045
alias:          hid:b0003g0101v0000056Ap00000044
alias:          hid:b0003g0101v0000056Ap00000043
alias:          hid:b0003g0101v0000056Ap00000042
alias:          hid:b0003g0101v0000056Ap00000041
alias:          hid:b0003g0101v0000056Ap0000003F
alias:          hid:b0003g0101v0000056Ap00000039
alias:          hid:b0003g0101v0000056Ap00000038
alias:          hid:b0003g0101v0000056Ap00000037
alias:          hid:b0003g0101v0000056Ap00000035
alias:          hid:b0003g0101v0000056Ap00000034
alias:          hid:b0003g0101v0000056Ap00000033
alias:          hid:b0003g0101v0000056Ap00000032
alias:          hid:b0003g0101v0000056Ap00000031
alias:          hid:b0003g0101v0000056Ap00000030
alias:          hid:b0003g0101v0000056Ap0000002A
alias:          hid:b0003g0101v0000056Ap00000029
alias:          hid:b0003g0101v0000056Ap00000028
alias:          hid:b0003g0101v0000056Ap00000027
alias:          hid:b0003g0101v0000056Ap00000026
alias:          hid:b0003g0101v0000056Ap00000024
alias:          hid:b0003g0101v0000056Ap00000023
alias:          hid:b0003g0101v0000056Ap00000022
alias:          hid:b0003g0101v0000056Ap00000021
alias:          hid:b0003g0101v0000056Ap00000020
alias:          hid:b0003g0101v0000056Ap00000019
alias:          hid:b0003g0101v0000056Ap00000018
alias:          hid:b0003g0101v0000056Ap00000017
alias:          hid:b0003g0101v0000056Ap00000016
alias:          hid:b0003g0101v0000056Ap00000015
alias:          hid:b0003g0101v0000056Ap00000014
alias:          hid:b0003g0101v0000056Ap00000013
alias:          hid:b0003g0101v0000056Ap00000012
alias:          hid:b0003g0101v0000056Ap00000011
alias:          hid:b0003g0101v0000056Ap00000010
alias:          hid:b0003g0101v0000056Ap00000003
alias:          hid:b0003g0101v0000056Ap00000000
depends:        hid
intree:         Y
vermagic:       4.10.0-37-generic SMP mod_unload 
parm:           touch_arbitration: on (Y) off (N) (bool)

ワコムタブレットの設定で使うコマンド

xsetwacom

xserver-xorg-input-wacom パッケージに含まれるコマンド。http://linuxwacom.sourceforge.net/wiki/index.php/Xsetwacom に説明がある。いくつかパラメータ名が古い(気がする)。

Usage: xsetwacom [options] [command [arguments...]]
Options:
 -h, --help                 - usage
 -v, --verbose              - verbose output
 -V, --version              - version info
 -d, --display "display"    - override default display
 -s, --shell                - generate shell commands for 'get'
 -x, --xconf                - generate xorg.conf lines for 'get'

Commands:
 --list devices             - display detected devices
 --list parameters          - display supported parameters
 --list modifiers           - display supported modifier and specific keys for keystrokes
 --set "device name" parameter [values...] - set device parameter by name
 --get "device name" parameter [param...]  - get current device parameter(s) value by name

xinput

xinput パッケージに含まれるコマンド。ワコムタブレットにかかわらず、ノートPCのタッチパットやキーボードなど入力に関するデバイスの制御を行う。

$ xinput --help
usage :
    xinput get-feedbacks <device name>
    xinput set-ptr-feedback <device name> <threshold> <num> <denom>
    xinput set-integer-feedback <device name> <feedback id> <value>
    xinput get-button-map <device name>
    xinput set-button-map <device name> <map button 1> [<map button 2> [...]]
    xinput set-pointer <device name> [<x index> <y index>]
    xinput set-mode <device name> ABSOLUTE|RELATIVE
    xinput list [--short || --long || --name-only || --id-only] [<device name>...]
    xinput query-state <device name>
    xinput test [-proximity] <device name>
    xinput create-master <id> [<sendCore (dflt:1)>] [<enable (dflt:1)>]
    xinput remove-master <id> [Floating|AttachToMaster (dflt:Floating)] [<returnPointer>] [<returnKeyboard>]
    xinput reattach <id> <master>
    xinput float <id>
    xinput set-cp <window> <device>
    xinput test-xi2 [--root] <device>
    xinput map-to-output <device> <output name>
    xinput list-props <device> [<device> ...]
    xinput set-int-prop <device> <property> <format (8, 16, 32)> <val> [<val> ...]
    xinput set-float-prop <device> <property> <val> [<val> ...]
    xinput set-atom-prop <device> <property> <val> [<val> ...]
    xinput watch-props <device>
    xinput delete-prop <device> <property>
    xinput set-prop <device> [--type=atom|float|int] [--format=8|16|32] <property> <val> [<val> ...]
    xinput disable <device>
    xinput enable <device>

バイスの検索

CTH-490 はタッチ対応モデルなのでタッチデバイスが出てくる。

$ xsetwacom --list devices
Wacom Intuos PT S 2 Pen stylus      id: 9   type: STYLUS    
Wacom Intuos PT S 2 Finger touch    id: 10  type: TOUCH     
Wacom Intuos PT S 2 Pad pad         id: 11  type: PAD       

$ xinput list
⎡ Virtual core pointer                        id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad                id=13   [slave  pointer  (2)]
⎜   ↳ Wacom Intuos PT S 2 Pen stylus            id=9    [slave  pointer  (2)]
⎜   ↳ Wacom Intuos PT S 2 Pad pad               id=10   [slave  pointer  (2)]
⎜   ↳ Wacom Intuos PT S 2 Finger touch          id=11   [slave  pointer  (2)]
⎣ Virtual core keyboard                       id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard                 id=5    [slave  keyboard (3)]
    ↳ Power Button                                id=6    [slave  keyboard (3)]
    ↳ Video Bus                                   id=7    [slave  keyboard (3)]
    ↳ Power Button                                id=8    [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard                id=12   [slave  keyboard (3)]
    ↳ Panasonic Laptop Support                    id=14   [slave  keyboard (3)]

設定の確認

xsetwacom では --list param で設定の一覧を確認することができる。ただしこれはドライバが対応しているだけで CTH-490 がすべて対応しているわけではない。

$ xsetwacom --list param
Area             - Valid tablet area in device coordinates. 
Button           - X11 event to which the given button should be mapped. 
ToolDebugLevel   - Level of debugging trace for individual tools (default is 0 [off]). 
TabletDebugLevel - Level of debugging statements applied to shared code paths between all tools associated with the same tablet (default is 0 [off]). 
Suppress         - Number of points trimmed (default is 2). 
RawSample        - Number of raw data used to filter the points (default is 4). 
PressureCurve    - Bezier curve for pressure (default is 0 0 100 100 [linear]). 
Mode             - Switches cursor movement mode (default is absolute). 
TabletPCButton   - Turns on/off Tablet PC buttons (default is off for regular tablets, on for Tablet PC). 
Touch            - Turns on/off Touch events (default is on). 
HWTouchSwitchState - Touch events turned on/off by hardware switch. 
Gesture          - Turns on/off multi-touch gesture events (default is on). 
ZoomDistance     - Minimum distance for a zoom gesture (default is 50). 
ScrollDistance   - Minimum motion before sending a scroll gesture (default is 20). 
TapTime          - Minimum time between taps for a right click (default is 250). 
CursorProximity  - Sets cursor distance for proximity-out in distance from the tablet (default is 10 for Intuos series, 42 for Graphire series). 
Rotate           - Sets the rotation of the tablet. Values = none, cw, ccw, half (default is none). 
RelWheelUp       - X11 event to which relative wheel up should be mapped. 
RelWheelDown     - X11 event to which relative wheel down should be mapped. 
AbsWheelUp       - X11 event to which absolute wheel up should be mapped. 
AbsWheelDown     - X11 event to which absolute wheel down should be mapped. 
AbsWheel2Up      - X11 event to which absolute wheel up should be mapped. 
AbsWheel2Down    - X11 event to which absolute wheel down should be mapped. 
StripLeftUp      - X11 event to which left strip up should be mapped. 
StripLeftDown    - X11 event to which left strip down should be mapped. 
StripRightUp     - X11 event to which right strip up should be mapped. 
StripRightDown   - X11 event to which right strip down should be mapped. 
Threshold        - Sets tip/eraser pressure threshold (default is 27). 
ResetArea        - Resets the bounding coordinates to default in tablet units. 
ToolType         - Returns the tool type of the associated device. 
ToolSerial       - Returns the serial number of the current device in proximity.
ToolID           - Returns the tool ID of the current tool in proximity.
ToolSerialPrevious - Returns the serial number of the previous device in proximity.
BindToSerial     - Binds this device to the serial number.
TabletID         - Returns the tablet ID of the associated device. 
PressureRecalibration - Turns on/off Tablet pressure recalibration
MapToOutput      - Map the device to the given output. 
all              - Get value for all parameters. 

get デバイス名 allタブレットの設定値をすべて呼び出す。デバイス名の指定方法は確認した限りでは2種類で、デバイス名とデバイス ID で指定する方法がある。デバイス ID は変わることがあるので注意。

$ xsetwacom --list devices
Wacom Intuos PT S 2 Pen stylus      id: 9   type: STYLUS    
Wacom Intuos PT S 2 Finger touch    id: 10  type: TOUCH     
Wacom Intuos PT S 2 Pad pad         id: 11  type: PAD       

$ xsetwacom --get "Wacom Intuos PT S 2 Pen stylus" all # デバイス名で指定する場合
$ xsetwacom --get 9 all # デバイスIDで指定する場合

xsetwacom --list devices の出力はタブ区切りになっているので grepcutawk でデバイス名だけを取り出すことができる。ただし、余計な空白を含んでいるようなので変数などに入れて呼び出したい場合は文字列の後ろにある空白を取り除く処理が必要になる。いくつかサンプルを掲載しておくけどここではシェルのお勉強はしないので方法はお好みで。

$ xsetwacom --list devices | awk -F $'\t' '/type: STYLUS/{ print $1 }'
Wacom Intuos PT S 2 Pen stylus  ←ここに微妙にスペースが残っている
$ echo `xsetwacom --list devices | awk -F $'\t' '/type: STYLUS/{ print $1 }'` # 文字列前後の余計な空白を取り除いてデバイス名を取り出す
Wacom Intuos PT S 2 Pen stylus
$ xsetwacom --list devices | grep 'type: PAD' | cut -d $'\t' -f2 | grep -o '[0-9]*' # デバイスIDだけ取り出す
11

以降はわかりやすくデバイスWacom Intuos PT S 2 Pen stylus を使うことにする。

とりあえず all で全項目を見る。

$ xsetwacom --get "Wacom Intuos PT S 2 Pen stylus" all
Button: Actions are not supported by xorg.conf. Try shell format (-s) instead.
Button: Actions are not supported by xorg.conf. Try shell format (-s) instead.
Button: Actions are not supported by xorg.conf. Try shell format (-s) instead.
Property 'Wacom Hardware Touch Switch' does not exist on device.
Property 'Wacom Proximity Threshold' does not exist on device.
Property 'Wacom Wheel Buttons' does not exist on device.
Property 'Wacom Wheel Buttons' does not exist on device.
Property 'Wacom Wheel Buttons' does not exist on device.
Property 'Wacom Wheel Buttons' does not exist on device.
Property 'Wacom Wheel Buttons' does not exist on device.
Property 'Wacom Wheel Buttons' does not exist on device.
Property 'Wacom Strip Buttons' does not exist on device.
Property 'Wacom Strip Buttons' does not exist on device.
Property 'Wacom Strip Buttons' does not exist on device.
Property 'Wacom Strip Buttons' does not exist on device.
Option "Area" "0 0 15200 9500"
Option "DebugLevel" "0"
Option "CommonDBG" "0"
Option "Suppress" "2"
Option "RawSample" "4"
Option "PressCurve" "0 0 100 100"
Option "Mode" "Absolute"
Option "TPCButton" "off"
Option "Touch" "off"
Option "Gesture" "off"
Option "ZoomDistance" "0"
Option "ScrollDistance" "0"
Option "TapTime" "250"
Option "Rotate" "none"
Option "Threshold" "27"
Option "Serial" "0"
Option "PressureRecalibration" "on"

いくつかは設定値が存在しないためエラーとなる。これが煩わしければこれらは標準エラー出力に出ているので捨てれば良い。

$ xsetwacom --get "Wacom Intuos PT S 2 stylus" all 2>/dev/null
Option "Area" "0 0 15200 9500"
Option "DebugLevel" "0"
Option "CommonDBG" "0"
Option "Suppress" "2"
Option "RawSample" "4"
Option "PressCurve" "0 0 100 100"
Option "Mode" "Absolute"
Option "TPCButton" "off"
Option "Touch" "off"
Option "Gesture" "off"
Option "ZoomDistance" "0"
Option "ScrollDistance" "0"
Option "TapTime" "250"
Option "Rotate" "none"
Option "Threshold" "27"
Option "Serial" "0"
Option "PressureRecalibration" "on"

見てみると Option "Mode" "Absolute" があるので、マウスのように相対位置でカーソルを動かすこともできるようだ。(やってみたが恐らく Area も弄らないととんでもない移動量になる)

Thresholdしきい値だが、どれくらいの筆圧から検知するかの設定だと思う。デフォルトは 27 だけど 1 にすれば弱く書いても反応するし、1024 に設定すれば筆圧を強くしないと書けない。

PressCurve は筆圧カーブだと思う。設定に関する情報は Wacom タブレット - ArchWiki に書いてある。また、Xsetwacom - linuxwacom には下記のような説明がある。

  0 100   0 100  # ridiculously soft
  0  50  50 100  # very soft
  0   0 100 100  # linear, the default
 50   0 100  50  # very firm
100   0 100   0  # unbelievably firm

PressCurve は現在、PressureCurve に変わっていたりする。新しい名称は Xsetwacom - linuxwacom に書かれている。

xinput でも同様に設定値の確認ができる。こちらもデバイス名またはデバイス ID を使用することができる。設定値の隣にある () 内の数値はデフォルト値などではなく、設定 ID のようだ。

$ xinput list
⎡ Virtual core pointer                        id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad                id=13   [slave  pointer  (2)]
⎜   ↳ Wacom Intuos PT S 2 Pen stylus            id=9    [slave  pointer  (2)]
⎜   ↳ Wacom Intuos PT S 2 Pad pad               id=10   [slave  pointer  (2)]
⎜   ↳ Wacom Intuos PT S 2 Finger touch          id=11   [slave  pointer  (2)]
⎣ Virtual core keyboard                       id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard                 id=5    [slave  keyboard (3)]
    ↳ Power Button                                id=6    [slave  keyboard (3)]
    ↳ Video Bus                                   id=7    [slave  keyboard (3)]
    ↳ Power Button                                id=8    [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard                id=12   [slave  keyboard (3)]
    ↳ Panasonic Laptop Support                    id=14   [slave  keyboard (3)]

$ xinput list-props 'Wacom Intuos PT S 2 Pen stylus'
Device 'Wacom Intuos PT S 2 Pen stylus':
    Device Enabled (139):   1
    Coordinate Transformation Matrix (141): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
    Device Accel Profile (268): 0
    Device Accel Constant Deceleration (269):   1.000000
    Device Accel Adaptive Deceleration (270):   1.000000
    Device Accel Velocity Scaling (271):    10.000000
    Device Node (265):  "/dev/input/event4"
    Wacom Tablet Area (278):    0, 0, 15200, 9500
    Wacom Rotation (279):   0
    Wacom Pressurecurve (280):  0, 0, 100, 100
    Wacom Serial IDs (281): 828, 2021887582, 2274, 0, 0
    Wacom Serial ID binding (282):  0
    Wacom Pressure Threshold (283): 27
    Wacom Sample and Suppress (284):    2, 4
    Wacom Enable Touch (285):   0
    Wacom Hover Click (286):    1
    Wacom Enable Touch Gesture (287):   0
    Wacom Touch Gesture Parameters (288):   0, 0, 250
    Wacom Tool Type (289):  "STYLUS" (267)
    Wacom Button Actions (290): "Wacom button action 0" (291), "Wacom button action 1" (292), "Wacom button action 2" (293)
    Wacom button action 0 (291):    1572865
    Wacom button action 1 (292):    1572866
    Wacom button action 2 (293):    1572867
    Wacom Pressure Recalibration (294): 1
    Device Product ID (266):    1386, 828
    Wacom Debug Levels (295):   0, 0

$ xinput list-props 9
Device 'Wacom Intuos PT S 2 Pen stylus':
    Device Enabled (139):   1
    Coordinate Transformation Matrix (141): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
    Device Accel Profile (268): 0
    Device Accel Constant Deceleration (269):   1.000000
    Device Accel Adaptive Deceleration (270):   1.000000
    Device Accel Velocity Scaling (271):    10.000000
    Device Node (265):  "/dev/input/event4"
    Wacom Tablet Area (278):    0, 0, 15200, 9500
    Wacom Rotation (279):   0
    Wacom Pressurecurve (280):  0, 0, 100, 100
    Wacom Serial IDs (281): 828, 2021887582, 2274, 0, 0
    Wacom Serial ID binding (282):  0
    Wacom Pressure Threshold (283): 27
    Wacom Sample and Suppress (284):    2, 4
    Wacom Enable Touch (285):   0
    Wacom Hover Click (286):    1
    Wacom Enable Touch Gesture (287):   0
    Wacom Touch Gesture Parameters (288):   0, 0, 250
    Wacom Tool Type (289):  "STYLUS" (267)
    Wacom Button Actions (290): "Wacom button action 0" (291), "Wacom button action 1" (292), "Wacom button action 2" (293)
    Wacom button action 0 (291):    1572865
    Wacom button action 1 (292):    1572866
    Wacom button action 2 (293):    1572867
    Wacom Pressure Recalibration (294): 1
    Device Product ID (266):    1386, 828
    Wacom Debug Levels (295):   0, 0

こちらもデバイス名またはデバイス ID で指定することができる。設定値の方も ID が使用可能。

$ xinput set-prop 'Wacom Intuos PT S 2 Pen stylus' 'Wacom Pressure Threshold' 1
$ xinput set-prop 9 283 1

watch-props では設定値のモニタリングができるので設定が変更されたときに変更点を随時表示してくれる。

$ xinput watch-props 9

設定の自動反映

※ここからは検証中

xsetwacom で設定した内容はタブレットを接続し直すと元に戻ってしまうので udev でコントロールする。が、xsetwacomxinput もデバイスが接続されたあとでなければ意味が無いのでどうしようかな、と。(スリープ?いや、なんかダサい…)

とりあえず udev か xorg.conf で設定することになると思うが、とりあえずデバイス ID を調べる…。

$ lsusb
Bus 002 Device 046: ID 056a:033c Wacom Co., Ltd 
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

CTH-490 はベンダー ID 056a、製品 ID 033c のようだ。が、

$ udevadm info -p `udevadm -nva idProduct=033c`
P: /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2
N: bus/usb/002/046
E: BUSNUM=002
E: DEVNAME=/dev/bus/usb/002/046
E: DEVNUM=046
E: DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2
E: DEVTYPE=usb_device
E: DRIVER=usb
E: ID_BUS=usb
E: ID_MODEL=Intuos_PTS
E: ID_MODEL_ENC=Intuos\x20PTS
E: ID_MODEL_ID=033c
E: ID_REVISION=0100
E: ID_SERIAL=Wacom_Co._Ltd._Intuos_PTS
E: ID_USB_INTERFACES=:030000:030102:
E: ID_VENDOR=Wacom_Co._Ltd.
E: ID_VENDOR_ENC=Wacom\x20Co.\x2cLtd.
E: ID_VENDOR_FROM_DATABASE=Wacom Co., Ltd
E: ID_VENDOR_ID=056a
E: MAJOR=189
E: MINOR=173
E: PRODUCT=56a/33c/100
E: SUBSYSTEM=usb
E: TYPE=0/0/0
E: USEC_INITIALIZED=12674327735

と、やってみたが SUBSYSTEM=usb じゃなくて SUBSYSTEM=input なんだよな…。/dev/input 以下を見ると色々あるが、どれがスタイラスとかパッドかわからない。

$ ls /dev/input
by-id
by-path
event0
event1
event10
event11
event12
event2
event3
event4
event5
event6
event7
event8
event9
js0
mice
mouse0
mouse1
mouse2
mouse3

xinput の Device Node を見てみるとスタイラスはいまのところ /dev/input/event4 のようだ。(接続したタイミングで変わるので注意)

$ xinput list-props 9 | grep Node
        Device Node (265):      "/dev/input/event4"

んで /dev/input/event4 を udevadm で見てみる。

$ udevadm info -a $(eval echo $(xinput list-props 9 | grep Node | cut -f 3))
Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.

  looking at device '/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/0003:056A:033C.0082/input/input275/event4':
    KERNEL=="event4"
    SUBSYSTEM=="input"
    DRIVER==""

  looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/0003:056A:033C.0082/input/input275':
    KERNELS=="input275"
    SUBSYSTEMS=="input"
    DRIVERS==""
    ATTRS{name}=="Wacom Intuos PT S 2 Pen"
    ATTRS{phys}=="usb-0000:00:1d.0-1.2/input0"
    ATTRS{properties}=="1"
    ATTRS{uniq}==""

  looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/0003:056A:033C.0082':
    KERNELS=="0003:056A:033C.0082"
    SUBSYSTEMS=="hid"
    DRIVERS=="wacom"
    ATTRS{country}=="00"

  looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0':
    KERNELS=="2-1.2:1.0"
    SUBSYSTEMS=="usb"
    DRIVERS=="usbhid"
    ATTRS{authorized}=="1"
    ATTRS{bAlternateSetting}==" 0"
    ATTRS{bInterfaceClass}=="03"
    ATTRS{bInterfaceNumber}=="00"
    ATTRS{bInterfaceProtocol}=="00"
    ATTRS{bInterfaceSubClass}=="00"
    ATTRS{bNumEndpoints}=="01"
    ATTRS{supports_autosuspend}=="1"

  looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2':
    KERNELS=="2-1.2"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{authorized}=="1"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bDeviceClass}=="00"
    ATTRS{bDeviceProtocol}=="00"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{bMaxPower}=="498mA"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bNumInterfaces}==" 3"
    ATTRS{bcdDevice}=="0100"
    ATTRS{bmAttributes}=="80"
    ATTRS{busnum}=="2"
    ATTRS{configuration}==""
    ATTRS{devnum}=="46"
    ATTRS{devpath}=="1.2"
    ATTRS{idProduct}=="033c"
    ATTRS{idVendor}=="056a"
    ATTRS{ltm_capable}=="no"
    ATTRS{manufacturer}=="Wacom Co.,Ltd."
    ATTRS{maxchild}=="0"
    ATTRS{product}=="Intuos PTS"
    ATTRS{quirks}=="0x0"
    ATTRS{removable}=="removable"
    ATTRS{speed}=="12"
    ATTRS{urbnum}=="366249"
    ATTRS{version}==" 2.00"

  looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2/2-1':
    KERNELS=="2-1"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{authorized}=="1"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bDeviceClass}=="09"
    ATTRS{bDeviceProtocol}=="01"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{bMaxPower}=="0mA"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bcdDevice}=="0000"
    ATTRS{bmAttributes}=="e0"
    ATTRS{busnum}=="2"
    ATTRS{configuration}==""
    ATTRS{devnum}=="2"
    ATTRS{devpath}=="1"
    ATTRS{idProduct}=="0024"
    ATTRS{idVendor}=="8087"
    ATTRS{ltm_capable}=="no"
    ATTRS{maxchild}=="8"
    ATTRS{quirks}=="0x0"
    ATTRS{removable}=="fixed"
    ATTRS{speed}=="480"
    ATTRS{urbnum}=="1238"
    ATTRS{version}==" 2.00"

  looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2':
    KERNELS=="usb2"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{authorized}=="1"
    ATTRS{authorized_default}=="1"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bDeviceClass}=="09"
    ATTRS{bDeviceProtocol}=="00"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{bMaxPower}=="0mA"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bcdDevice}=="0410"
    ATTRS{bmAttributes}=="e0"
    ATTRS{busnum}=="2"
    ATTRS{configuration}==""
    ATTRS{devnum}=="1"
    ATTRS{devpath}=="0"
    ATTRS{idProduct}=="0002"
    ATTRS{idVendor}=="1d6b"
    ATTRS{interface_authorized_default}=="1"
    ATTRS{ltm_capable}=="no"
    ATTRS{manufacturer}=="Linux 4.10.0-38-generic ehci_hcd"
    ATTRS{maxchild}=="3"
    ATTRS{product}=="EHCI Host Controller"
    ATTRS{quirks}=="0x0"
    ATTRS{removable}=="unknown"
    ATTRS{serial}=="0000:00:1d.0"
    ATTRS{speed}=="480"
    ATTRS{urbnum}=="494"
    ATTRS{version}==" 2.00"

  looking at parent device '/devices/pci0000:00/0000:00:1d.0':
    KERNELS=="0000:00:1d.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="ehci-pci"
    ATTRS{broken_parity_status}=="0"
    ATTRS{class}=="0x0c0320"
    ATTRS{companion}==""
    ATTRS{consistent_dma_mask_bits}=="32"
    ATTRS{d3cold_allowed}=="1"
    ATTRS{device}=="0x1c26"
    ATTRS{dma_mask_bits}=="32"
    ATTRS{driver_override}=="(null)"
    ATTRS{enable}=="1"
    ATTRS{irq}=="23"
    ATTRS{local_cpulist}=="0-3"
    ATTRS{local_cpus}=="000f"
    ATTRS{msi_bus}=="1"
    ATTRS{numa_node}=="-1"
    ATTRS{revision}=="0x04"
    ATTRS{subsystem_device}=="0x8338"
    ATTRS{subsystem_vendor}=="0x10f7"
    ATTRS{uframe_periodic_max}=="100"
    ATTRS{vendor}=="0x8086"

  looking at parent device '/devices/pci0000:00':
    KERNELS=="pci0000:00"
    SUBSYSTEMS==""
    DRIVERS==""

適当に /etc/udev/rules.d/90-wacom.rules を作る。

ACTION=="add", SUBSYSTEMS=="input", ATTRS{name}=="Wacom Intuos PT S 2 Pen", RUN+="/usr/bin/env XAUTHORITY=/home/me/.Xauthority DISPLAY=:0 /usr/bin/xsetwacom set 'Wacom Intuos PT S 2 Pen stylus' Threashold 1"
$ udevadm test --action=add `udevadm trigger -nva name="Wacom Intuos PT S 2 Pen"`
calling: test
version 232
=== trie on-disk ===
tool version:          232
file size:         8801854 bytes
header size             80 bytes
strings            1856302 bytes
nodes              6945472 bytes
:
中略
:
Reading rules file: /etc/udev/rules.d/99-wacom.rules
RUN '/usr/bin/env XAUTHORITY=/home/me/.Xauthority DISPLAY=:0 /usr/bin/xsetwacom set 'Wacom Intuos PT S 2 Pen stylus' Threashold 1' /etc/udev/rules.d/99-wacom.rules:5
Unload module index
Unloaded link configuration context.
This program is for debugging only, it does not run any program
specified by a RUN key. It may show incorrect results, because
some values may be different, or not available at a simulation run.

.INPUT_CLASS=mouse
.MM_USBIFNUM=00
ABS=10003000003
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/0003:056A:033C.0082/input/input275
EV=1b
ID_BUS=usb
ID_FOR_SEAT=input-pci-0000_00_1d_0-usb-0_1_2_1_0
ID_INPUT=1
ID_INPUT_TABLET=1
ID_MODEL=Intuos_PTS
ID_MODEL_ENC=Intuos\x20PTS
ID_MODEL_ID=033c
ID_PATH=pci-0000:00:1d.0-usb-0:1.2:1.0
ID_PATH_TAG=pci-0000_00_1d_0-usb-0_1_2_1_0
ID_REVISION=0100
ID_SERIAL=Wacom_Co._Ltd._Intuos_PTS
ID_TYPE=hid
ID_USB_DRIVER=usbhid
ID_USB_INTERFACES=:030000:030102:
ID_USB_INTERFACE_NUM=00
ID_VENDOR=Wacom_Co._Ltd.
ID_VENDOR_ENC=Wacom\x20Co.\x2cLtd.
ID_VENDOR_ID=056a
KEY=1c01 0 0 0 0 0
MODALIAS=input:b0003v056Ap033Ce0110-e0,1,3,4,k140,14A,14B,14C,ra0,1,18,19,28,m0,lsfw
MSC=1
NAME="Wacom Intuos PT S 2 Pen"
PHYS="usb-0000:00:1d.0-1.2/input0"
PRODUCT=3/56a/33c/110
PROP=1
SUBSYSTEM=input
TAGS=:seat:
UNIQ=""
USEC_INITIALIZED=12674348315
run: 'kmod load input:b0003v056Ap033Ce0110-e0,1,3,4,k140,14A,14B,14C,ra0,1,18,19,28,m0,lsfw'
run: '/usr/bin/env XAUTHORITY=/home/me/.Xauthority DISPLAY=:0 /usr/bin/xsetwacom set 'Wacom Intuos PT S 2 Pen stylus' Threashold 1'

udevadm のテストでは RUN+= に設定したコマンドが走るようだけど、これじゃ設定されないのよね。sleep 挟んだところでこのコマンド終わらないとデバイス認識されないだろうし…。

一応、udevadm monitor --env で監視したときのスタイラスの情報を残しておく。

UDEV  [76906.924294] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/0003:056A:033C.0085/input/input281 (input)
.INPUT_CLASS=mouse
.MM_USBIFNUM=00
ABS=10003000003
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/0003:056A:033C.0085/input/input281
EV=1b
ID_BUS=usb
ID_FOR_SEAT=input-pci-0000_00_1d_0-usb-0_1_2_1_0
ID_INPUT=1
ID_INPUT_TABLET=1
ID_MODEL=Intuos_PTS
ID_MODEL_ENC=Intuos\x20PTS
ID_MODEL_ID=033c
ID_PATH=pci-0000:00:1d.0-usb-0:1.2:1.0
ID_PATH_TAG=pci-0000_00_1d_0-usb-0_1_2_1_0
ID_REVISION=0100
ID_SERIAL=Wacom_Co._Ltd._Intuos_PTS
ID_TYPE=hid
ID_USB_DRIVER=usbhid
ID_USB_INTERFACES=:030000:030102:
ID_USB_INTERFACE_NUM=00
ID_VENDOR=Wacom_Co._Ltd.
ID_VENDOR_ENC=Wacom\x20Co.\x2cLtd.
ID_VENDOR_ID=056a
KEY=1c01 0 0 0 0 0
MODALIAS=input:b0003v056Ap033Ce0110-e0,1,3,4,k140,14A,14B,14C,ra0,1,18,19,28,m0,lsfw
MSC=1
NAME="Wacom Intuos PT S 2 Pen"
PHYS="usb-0000:00:1d.0-1.2/input0"
PRODUCT=3/56a/33c/110
PROP=1
SEQNUM=7299
SUBSYSTEM=input
TAGS=:seat:
UNIQ=""
USEC_INITIALIZED=76906917653

あとは xorg.conf を使う方法。これまた /usr/share/X11/xorg.conf/90-wacom.conf とかいう適当なものを作る。これも効くかどうかはわからん。

Section "InputClass"
    Identifier  "Wacom CTH-490"
    MatchUSBID  "056a:033c"
    Option      "Wacom Pressure Threshold" "1"
EndSection

とりあえず時間なくて色々試す暇が無いので KDE 環境のスタートアップを使うことにして、.config/autostart-scripts/wacom.sh を作ってログイン時に実行するようにしておいた。

#!/bin/sh
/usr/bin/xsetwacom set "Wacom Intuos PT S 2 Pen stylus" Threshold 1